No payments or feedback

I also have a terrible experience with Ultimate Letting. They are supposed to be managing my property but I seem to be managing them. Even if tenants pay I never get paid until I called them. Sometimes the tenant would pay but they would not know until they investigate it after I enquire. Lately I am getting no payments and no feedback from them regardless of my mails and phone calls to them and regardless of the possibility that the tenants have paid. They always say they will investigate and call me back which never happens. It is scary that the tenants claim they are now scared to deposit money to them as they have noticed that I am not getting the payments. Even after advising them of this and demanding that they sort this situation out with the tenant as I don't want to meddle in their contract I have gotten no feedback from them. Again the frustration is that I don't stay in Gauteng and cannot easily go and knock on their door which is the reason I opted to use an agent, a decision that I now greatly regret.